COLUMBIA, Mo. (AP) – Proponents of using more wood byproducts as an alternative energy source will gather in Columbia on Wednesday after a recent setback in the Missouri Ozarks.  Elected officials in the southeast Missouri town of Salem recently rejected a proposal by ProEnergy Services of Sedalia to build a 20-megawatt, wood-burning power plant. The plant would have used lumber byproducts and wood waste as fuel. Project supporters hoped it would spark similar efforts across the state, especially in the Ozarks. The Columbia session is sponsored by the University of Missouri’s Center for Agroforestry. The daylong event will feature researchers from Missouri and other universities and from private industry.